Preparation and characterization of magnetic Nanoparticles/SiO2 porous composite xerogels

被引：0

作者：

Fu, Huiqin ^{[1
]}

Ding, Xingeng ^{[1
,2
]}

Ren, Chunrong ^{[1
]}

Meng, Cheng ^{[1
]}

Li, Wenqi ^{[1
]}

Yang, Hui ^{[1
,2
]}

机构：

[1] Department of Materials Science and Engineering, Zhejiang University, Hangzhou

[2] Zhejiang California International Nano Systems Institute, Hangzhou

来源：

Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2016年 / 44卷 / 10期

关键词：

Magnetic; Porous material; Silica; Sol-gel;

D O I：

10.14062/j.issn.0454-5648.2016.10.21

中图分类号：

学科分类号：

摘要：

A magnetic porous aerogel composite was prepared via a sol-gel method and in-situ synthesis of Ni/Cu ferrite spinel. The microstructure, magnetism and adsorption ability were characterized. The results show that the organic molecular chain of glycollic acid in precursor is combined with inorganic phase to form the skeleton and the doublely-connected pore structure, the porosity of as-synthesized composite aerogels is 73.22%, and the bulk density is 0.36 g/cm3, with an average grading of 16 µm; the magnetic nanoparticles distribute uniformly in the SiO2 matrix. The specific surface area of samples decreases and the saturation magnetization increases with the increase of the calcination temperature. The composite as-prepared presents a maximum capacity of 100.67 mg/g, can adsorb Ce(IV) from aqueous solution at a a superior performance of recycle ability, and can be separated by a magnetic field. © 2016, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.

引用

页码：1522 / 1531

页数：9

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